The pair were said to have become friends after Williams appeared as a guest mentor on the ITV1 reality series. Meanwhile, the show's final saw them teaming up to perform 'Angels' together.

However, according to The Sun, Murs has now said: "I'm a bit disappointed Robbie hasn't been in touch. I texted him to say Happy New Year and congratulations on getting engaged but heard nothing back."

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He added: "His phone must be dead."

The newspaper also reports that the aspiring popstar has not heard from his former mentor Simon Cowell either.

Murs lost out to Joe McElderry in last month's X Factor final, but was later tipped to release a single under Cowell's record label in the spring.